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12 top summer gardening tips

Good preparation is critical for your garden to survive the wilting effects of the Aussie summer. Summer means different things to different gardeners. While many southern and central regions bake dry, for instance, the steamy Top End is rejuvenated by drenching storms. But for all of us, summer brings common challenges, such as dividing time and effort between keeping our gardens in good shape, and enjoying them during the summer holidays.

1. Take care of budding plants

Does your camellia drop its buds and flowers? As camellias (pictured) initiate budding in summertime, sudden loss of buds and flowers is often a consequence of the plants drying out, particularly when they are growing in containers. Mulch and water deeply once or twice weekly during hot, dry weather to limit this common and irritating problem.

2. Help pots to stay cool

Potted plants, especially those in terracotta pots, are vulnerable to overheating. Lightly mulch and, where possible, position them out of hot western sunshine. Remember that standing potted plants in saucers of water encourages root rot and mosquito breeding. Instead, stand them in saucers filled with sand, and keep the sand moist. This ensures roots stay cool and plants remain healthy. If potted plants dry out to the point where re-wetting is hard, soak them in a bucket of water for half an hour, then drain.

3. Water early to avert mildew

Water in the cool of the day. The best time is morning but, if you water in the afternoon, allow enough time for foliage to dry out before sunset. This reduces the risk of mildew and other fungi attacking leaves, and there’s less chance you’ll get caught by the evening shift of mosquitoes or sandflies. Mildew frequently attacks roses, pumpkin, melon, zucchini and cucumber. Spray plants weekly with a solution made from one part cow’s milk to 10 parts water. Repeat after heavy rain or irrigation. This remedy won’t reverse mildew damage, but it’s an effective preventative.

4. Add nutrients to the water

If you can only water occasionally, try to water plants deeply and use that opportunity to simultaneously feed and correct mineral deficiencies. Apply a soluble fertiliser with added seaweed. Water in potash around the base of fruit trees, especially citrus, banana and lychee, to improve fruit flavour and juiciness. The potassium in potash is also important for controlling anthracnose disease of avocado and mango, and it generally helps to improve plant vigour and resistance to foliar fungi.

5. Keep the lawn long and lush

Brown, bare, weed-infested lawns are symptoms of scalping, which means cutting lawns too low. It’s a misconception that cutting lawns low reduces the cutting frequency. Instead, mow lawns as high as your mower permits. Longer turf wears better, but most important of all, a thick sward suppresses pernicious weeds such as oxalis and bindii. Fresh lawn clippings are great for activating compost heaps and mulching shrubberies, but only when applied in a thin layer, up to 5cm deep, as thicker layers can burn leaves and encourage collar rot on trees and shrubs. Keep lawn lush by foliar feeding with seaweed tonic once monthly and applying one handful of poultry manure per square metre each season, before rain or irrigation. Allow two weeks for this to green your lawn – and for the odour to disappear before having a garden party!

6. Keep the water flowing

Check that hoses and irrigation systems are free of leaks, and unblock the nozzles. Clear debris from gutters so that every shower funnels extra water into your rainwater tank. Do you need another, bigger rainwater tank? Use mosquito mesh to stop mosquitoes and frogs from entering tanks and pipes.

7. Do hard work when it’s cool

It’s safer, and you’re more likely to do a better job, if you complete energetic work such as mowing in the cool of the day – either before 10am or after 4pm. A good drink of water and a smear of sunblock are prerequisites, because that one five-minute job often leads to another, and another. Sunblock takes 15 minutes to create its protective layer, so use that time to plan your day in the garden. Don’t forget your hat (or umbrella) and sunnies too, and if you do get burned, nothing beats the cooling, healing effect of fresh, home-grown juice of aloe vera. In my Brisbane garden, a tea tree oil-based mosquito repellent is also essential. Save some light tasks, such as weeding or propagating, to complete in the comfort of a shady spot.

8. Protect new plantings

Freshly planted vegetable and flower seedlings are likely to need a bit of sun hardening. Shelter them with 50 per cent shadecloth, old net curtains, dead palm fronds, or leafy branches for a week or two. This helps them establish without harm.

9. Plan shade strategically

Northern boundaries may benefit from some extra shade, but will this make a solar panel or hot water system inefficient? Strategically placing a deciduous tree, vine or some clumping bamboo to shield your house and garden from searing western sunshine is often a better option. For more information on using plants to shade exposed areas of your home, visit Your Home Design Guide and choose ‘Shading’ in the technical manual.

10. Boost trace elements

Magnesium encourages robust growth and the production of energy in plants. Gardenias and roses in particular benefit from supplementary magnesium in summer. Also apply it to cymbidium orchids to help initiate flower buds. Add 1 heaped tsp of Epsom salts to 4.5L of water. Either spray the foliage, or water it in at the roots. If the leaves of citrus, banksia, grevillea, camellia or azalea become stunted and mottled yellow, now is also the time to boost the iron content of soil by applying iron chelates. This acidifies soil and adds iron necessary for healthy growth. It takes a month or so to see a result.

11. Look out for pests

In northern Australia, termites perform the same beneficial environmental services as earthworms, and activity increases where soils are warm and moist. Most species are disinclined to attack household and garden timber. But be on guard for pest species and keep garden tools with wooden handles, hardwood stakes and other timber temptations off the ground. Avoid spreading woodchip closer than 1m to houses or timber sheds, and keep soil dry in this zone to help divert their foraging. Protect untreated timber, such as benches and garden bed edging, from decay. There are some non-toxic products around that are safe for making kids’ play equipment and raised vegie beds.

12. Use your time wisely

Sometimes it’s just not possible to do everything you want to do in the garden. If you’re short of time but like your garden to look cared for, some fresh mulch, a few strategically placed flowering plants and a freshly edged lawn will give your garden a lift. If you have a bit more time, and live in a moist region, place granular fertilisers such as poultry manure on the soil and cover with mulch. Apart from keeping soil cool and conserving water, mulch stops stormwater washing fertiliser away. If you have plants growing among hungry trees, give the plants a foliar feed so they can absorb the nutrients directly, rather than the tree roots getting to them first.

How much water is enough?

In my Brisbane garden, I don’t have enough water to survive long, dry spells, so I water by priority. Thirsty citrus and banana top the list as, without enough water, they won’t fruit. But how else can you tell if a plant is parched? Moisture-loving plants, such as pumpkin or impatiens, may wilt at noon, simply because they can’t absorb soil moisture as fast as it evaporates. Gingers are better indicators of dry soil, because they roll their leaves when stressed. Always inspect your soil to see if more water is really necessary.

Read more at :https//www.homelife.com.au/gardening/gardening-tips/12-top-summer-gardening-tips

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